5 public Student(String name, int studentID) {
super(name,studentID); } 6
7 public int getRecord() { return record; } 8
9 public void setRecord(int record) { 10 record =
Math.max(0,record); 11 record = Math.min(100,record); 12
this.record = record; 13 } 14 }
• getRecord()
100 0
int Math.max(a,b)
1 public int getMax( List<Integer> list ){ 2 int
max=list.get(0); 3 for ( int i = 0 ; i < list.size() ; i++ ){ 4
max = Math.max(max, list.get(i)); 5 } 6 return max; 7 }
2 Integer list
1 public int getMaxIndex( List<Integer> list ){ 2 int index=0
3 int max=list.get(index); 4 for ( int i = 0 ; i < list.size() ;
i++ ){ 5 if ( list.get(i) > max ){ 6 max = list.get(i); 7 index
= i; 8 } 9 }
10 return index; 11 }
d2x
v = dx
(1) x v x
v ω λdx/dt dv/dt
dv
E = 1
2 mv2 +
(1)
(2)
√ 2
2
1
2
1
√ 2
1
= 1
2
1 [a, b) M bin
a = −0.1b = 0.9M = 5
0 [−0.1, 0.1)
1 [0.1, 0.3)
2 [0.3, 0.5)
3 [0.5, 0.7)
4 [0.7, 0.9)
r k w = (b− a)/M
k =
{0.0, 0.1, 0.35, 0.66} bin